Re-enable trimming of library tests on Apple mobile #104097
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| <!-- Forced by ILLink targets --> | |||
| <SelfContained>true</SelfContained> | |||
| <PublishDir>$(OriginalPublishDir)</PublishDir> | |||
| <!-- Prevent getting DynamicCodeSupport=true default from ILLink targets that are imported with the Sdk.targets --> | |||
| <DynamicCodeSupport>false</DynamicCodeSupport> | |||
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Nice catch! These are difficult to detect when something goes wrong at runtime.
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I was under the impression we'd only do AOT on helix, not actual trimming. @steveisok how does this work?
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The new default for the property should affect many more cases than just AOT on helix so this doesn't sounds like the correct place for this fix.
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I was under the impression we'd only do AOT on helix, not actual trimming. @steveisok how does this work?
If you want trimming + AOT on helix, both have to occur in the same place. Otherwise, you have to send individual copies of the trimmed shared framework for each test from the build machine.
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That might not be as painful as it seemed initially.
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@akoeplinger Since we perform trimming on Helix, we can move this to the Directory.Build.props file. However, it will not have effect on other components.
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I've added a default switch to disable trimming on build machines as well. I haven't found a common location where these switches are set in Mono. Since we don't ship Apple mobile support from the runtime repository, the switch is set in the SDK/Xamarin.
A potential place to set this switch could be the AOT compiler props, but they are invoked after the trimming.
/cc: @sbomer
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The ideal solution would be for the AOT compiler props in this repo to be imported before the trimming props, which is how this works in the SDK. But barring that the Directory.Build.props seems like a good place.
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Description
This PR re-enables the trimming of library tests on Apple mobile platforms. This change prevents the default setting of
DynamicCodeSupport=truefrom ILLink targets that are imported. The regression was introduced in #103594.With this change, the issue mentioned in #82637 has been mitigated. The tracking issue will remain open as there are separate reliability-related problems that still need to be addressed.
Fixes #91923